Cheng Ho's fleet discovered bird's nests while sheltering on an island during a storm, and found they provided nourishment when used as food. Upon returning to China, he presented bird's nests to the emperor, establishing them as nourishing beauty supplements. However, some businesses adulterate bird's nests with chemicals and additives for profit. The document's organization aims to provide consumers with pure, unadulterated bird's nests harvested traditionally by hand without bleaching or artificial ingredients.